Improvement in the manufacture of malleable sron



' it is worn out.

raras Nrrs PATENT JOHN J. G. COLLINS, OF PHILADELPHIA, PENNSYLVANIA.

Specilieation forming part of Letters Patent No. 3012,50 E, dated MayIt, trito.

To rtl/Z whom, it 'fit/ty mmc/:ria:

' Be it known that. l, Jol-IN J. G. COLLINS, of the city and count yofPhiladelphia,and State of Pennsylvania irc invented certainImprovements in the f-`- anul'acture of Iron, of which the tolldnin aspecification.

The natur my invention consists in the .introductioi a current ot steam,in conjunction with thv blast to the ordinary Catalan or bloomery fire,and thereby to manufacture a more perl'ect wrought-iron direct from theore or pip` metal.

To enable others skilled in the art to make and use my invention, I willnow proceed to describe its construction and operation.

Refcrri ng to the drawing accom panying` this specification, the figureis a general elevation ot' the furnace, with some of the parts insection.

The Rogers furnace (an improvement on the old Catalan furnace) is shownsurrounded by walls of cast-iron A, and a hollow hearth plate, O. Thetuyere I) enters through the Waterplate E. A blank waterplate, F, isshown bolted to the opposite side l'or replacen'ient- The chimney G iscarried upon a base-plate, H, resting upon pillars Ii, and the wholeupon a bed ot' masonry. Vithin the chimney are placed the hot-blastpipes M, restintr upon the basevplate H. m is the inlet Al'or the coldair. m is the outlet forthe hot-blast.

In the chimney. above the blast-pipes, is fixed a steam-boiler, N thesteam from which passes down the pipe O through valve p, and enters thebottom of the hot-blast pipe at o', and from thence passes along beneaththe blast into the furnace. Cold-blast may also be used. R representsthe bloom ot' iron in a state of semif'nsion. Above it is the ore andcharcoal. The eiiect ot' the steam playing;` on the metal or bloom hasthe effect ot' more thoroughly deoxdizingand decarbonizing` the metaland rcduc ing,` itto a more duct-ile state, termed in the tradebringingto nature, :it ene operation. The quantity or' steam admittet'lis regulated by the valve p, the handle ot' which, p, passes over agraduated arc, so that the workman can control the amount according tothe working of the metal. The advantage and beneficial result of thisprocess is most, perceptible on magnetic and tit-aniierous and allrefractory ores.

I make no claim to the particular' arrangement ot the blast-pipes or theposition ot' the boiler, as steam may be taken from any usual source.

NV hat I claim as my invention, and desire to secure by Letters Patent,is

rPhe application of steam, combined with the blast in the tuyerc orpipes connected therewith, tort-he purpose ot'rcducing magnetic andother refractory ores to a malleable state, as herein described.

JOHN' J. tt. COLLINS.

.Vtnesses;

EDWD. BROWN, Jos. BABY.

